Vanilla and Mediawiki Page Template

I might be missing something obvious here, but figured I would ask.
Right now with Vanilla and MediaWiki integration enabled, clicking on the Template: Wiki or Template: Vanilla link in the admin bar directs me to the "Custom Page" under Pagelines > Templates > Template Setup in the admin side.
Is it possible to change this so that instead of both linking to "Custom Page" they instead link to a page I developed? For example, in the child theme I have created page.vanilla.php and page.wiki.php creating templates "Vanilla" and "Wiki" respectively and would prefer it if integration would use these vice "Custom Template".

Hm, I'm not sure how this change could be implemented, but perhaps someone else with more expertise can contribute better insight. It might be something that needs to be done in the backend, but I'm not sure.